The Chaser pipe mod is a simple semi-mechanical mod from Smok. It takes an 18350 flat-top IMR battery, and has a top-mounted magnetic switch! Although there are wires and solder, this mod is still capable of firing sub-ohm coils (Make certain you are not exceeding the amp limit of your battery). It has a 510 connection with a drip well, so you can use most eGo-style tanks and clearomizers. The Chaser is perfect for the former pipe-smoker, and it's small enough to fit in the palm of your hand! Perfect for stealth vaping!